Drop Deck Widener Trailer
4M Ultra Tri-Axle Drop Deck Widener Trailer
Key Benefits
THE BIG PROBLEM... SOLVED!
The need to choose a large quad-axle trailer and its access limitations is now a thing of the past.
The 4m Ultra Tri-Axle Widener Trailer is engineered to handle heavy haulage loads, including Class 10 combine harvesters and large excavators when fully widened, while still offering the flexibility and access of a traditional tri-axle trailer for everyday transport.
Designed for strength, versatility and performance, it delivers the best of both worlds in one heavy-duty trailer—maximising payload capacity without compromising manoeuvrability or access.
Australian Made Strength with a 5-year Structural Warranty
Maximum Versatility, Year-Round Value
Engineered for Access, Not Just Payload
Skip the Quad, Keep the Capability
Superior Roll Stiffness for Safer Transport
The Ultimate Tri-Axle for Flagship Headers
Brimarco’s 4M Ultra Tri-Axle Drop Deck Widener Trailer is designed for operators who need heavy-duty machinery transport capability without the access limitations of a large quad-axle trailer.
Built in Ballarat, Victoria, this custom drop deck widener trailer is suited to agricultural machinery, civil construction equipment, excavators, harvesters and other oversized plant that requires strength, deck width and maneuverability.
Specifications
| Feature Name | Feature Info |
|---|---|
| Payload | 31t at full width |
| ATM | 44,000 kg |
| GTM | 27,000 kg |
| Deck Width | 2.5m – 4m |
| Deck Height | 0.995m |
| Deck Lengths | 13.4m (45ft model), 13.7m (46ft model), 14.3m (48ft model) |
| Overall Lengths | 13.73m (45ft road train compliant), 14.08m (46ft model), 14.63m (48ft model); custom lengths available on request |
| Axle Config | Tri-Axle |
| Availability | Made to order, call to check ex-rental/stock units |
| Est. Lead Time | 12 weeks (dependent on current production schedule) |
| Australian Designed and Built | Designed, engineered and manufactured in Ballarat Victoria. Proudly Australian Made. |
| Main Rails | 350 grade webs and flanges; 25mm lower flange, 16mm upper flange |
| Coaming Rails | 250mm and 125mm PFC with 18 chain bars |
| Flooring | 5mm 700G on decks and ramps with 31 in-deck tie down points |
| Chain Points | 31 in-deck tie down points; 18 coaming chain bars |
| Tyre Carrier | Tyre carrier suited for 19.5” spares |
| Front Gate | 1600mm high heavy-duty gate |
| Rear Ramps | Heavy-duty chain actuated bi-fold ramps; 4200mm x 900mm box tube with a 5mm 700 grade steel plate surface and welded grip strips |
| Upper Ramps | Aluminium 3-piece flip-over |
| Paint | Fully sandblasted, primed, and finished in two high quality 2-pack paint, with a choice of colours |
| Suspension | Fuwa K Hitch heavy-duty tri-axle suspension with 19.5” 8 stub hubs |
| Hydraulics | Dual acting heavy-duty 3” cylinders fit with premium valves and 12V power pack |
| Landing Gear | 2 Speed Fuwa K Hitch landing legs |
| Wheels | Steel painted rims with 265/70 19.5” tyres |
| Electrics | 175A Anderson plug, 12V lead acid battery, multi-volt LED lighting with beacon |
| Toolbox | Powder coated lockable toolbox with stainless door (1200mm x 350mm x 400mm) |
| Water Tank | Polished 60L aluminium water tank |
| Oversize Signage | Custom spring-loaded flip-over signs |
| Flag Holders | Front and rear flag holders |
Aggregate Trailer Mass (ATM) is the total maximum weight of a trailer when unhitched, including its payload. Gross Trailer Mass (GTM) is the maximum weight supported by the trailer’s axles when hitched to a vehicle.
Optional Trailer Features
Resources & Downloads
Product Brochure |
Dimensions
Note: All dimensions are listed in metres (m)
†Top deck length includes flip over ramp in position shown. For custom lengths or other special requirements please contact Brimarco directly. ^Payload refers to engineered structural capacity. On-road limits depend on local regulations and vehicle configuration. *5 Year Warranty applies to structural defects only.
Frequently Asked Questions
Why choose a tri-axle widener over a quad-axle trailer?
Is this trailer covered by warranty?
Why choose a widener trailer?
What payload can the Ultra 4m Tri-Axle Widener carry?
Where are Brimarco trailers designed and built?
Use Cases
Brimarco Customer Testimonials
Bruce W. Hudgson OAM
The Lions V Districts Cancer Foundation Inc. embarked on a mission to provide free skin checks for Victoria and Southern New South Wales in 2017, and set about sourcing a purpose- built unit to satisfy the project. The Chairman of the Foundation had previous experience with Brimarco in the building of two units, one for Lions Sight and Hearing Unit and one for a Commercial Company display unit. Therefore, there was no hesitation in going back to Brimarco who were considered the best in the business for special purpose builds. We were right, and got exactly what we wanted. The Team at Brimarco met all our needs, and their input and ideas were incredible, We launched in 2021 and have had trouble free operation since that date. If you are thinking of a special build, look no further Brimarco is the one to go to. Quality Built and Tough.
Chairman Lions V Districts Cancer Foundation Inc.
Matt Tennant
Brimarco trailers have been an integral part of our business since our earliest days. We’ve had several ‘Tough As’ trailers and all have passed the test of time for reliability, strength and durability. The team at Brimarco have always risen to the challenge by customising our trailers to suit our needs and most importantly, have always provided an high level of after sales service. I would highly recommend the Brimarco brand to anyone seeking the best quality, Australian built trailer on the market today that is backed by a team of dedicated, fair and passionate professionals.
Managing Director, TENEX Rail.
Charles Cole
Building an Outside Broadcast unit is no simple task, TRP’s operational constraints add a complexity that needs to be worked through, and the Brimarco team were agile and responsive to my requirements, requests, and suggestions. Working from my pencilcad layout, the design and drafting team developed a unique chassis that accommodated our extensive broadcast wiring and HVAC requires. I am very satisfied with after sales service provided, as Brimarco back their product and ensure client satisfaction. If you have a unique vehicle or trailer build, I would recommend you contact the team at Brimarco.
Engineering and Technical Operations Manager, TRP
Bill Meufells
Brimarco has ticked every box that I requested… The quality of workmanship is superb……This will replace the current library that I have been driving for 12 years. The new Brimarco vehicle resolves all of the issues of the old vehicle. We needed to embrace the future when designing the new vehicle so that it remains current for the next 10-12 years.
Mobile Library Operator
Ryan Gaiter
The Brimarco team have impressed us with their efforts to help us find cost-savings throughout the project, without sacrificing the high standards and quality of the library. This was an important consideration for Council as we are always looking to get the best possible value for rate-payers. I’m sure people right throughout the Richmond Valley and Kyogle municipalities will enjoy and appreciate the many features of our state-of-the-art new mobile library.
Richmond Valley Council Finance and Procurement Manager
Robert Knight
Riverina Regional Library engaged Brimarco… to construct a large mobile library trailer to meet the needs of our substantial service area. Not only did Brimarco deliver a quality product, but their innovative team also worked with RRL to maximise the internal floor space and flexibility of the mobile library through clever design.
Executive Director, Riverina Regional Library
Craig Dack
The team at Brimarco designed the best value solution when we purchased the Race Trailer 5 years ago. Today it still looks brand new due to the quality workmanship and Brimarco continues the relationship with Yamaha’s high profile motocross team with ongoing service and support. I can’t speak more highly of their professionalism and attitude to get it right.
Owner & Operator of Yamaha Factory Racing Australian Mr Motocross '86–'88, '90
Why Choose Brimarco?
Australian Design
Every Brimarco trailer begins with Australian design thinking. Developed in Ballarat to suit local conditions, machinery and road networks. Purpose-built solutions ensure optimal performance, durability and compliance from day one.
Australian Engineering
Engineered in-house using advanced modelling and real-world testing, Brimarco trailers are designed for strength, stability and reliability, delivering high-performance transport solutions for demanding agricultural and civil applications.
Australian Manufacturing
Built in Ballarat, Victoria, each trailer is manufactured with precision and care using high-quality materials, ensuring consistent quality, faster turnaround times and equipment you can rely on in the field.
Local Support
When you work with Brimarco, you deal directly with the people who design and build your trailer. That means faster answers, practical advice and genuine support when you need it most.
50 Years of Experience
Backed by decades of industry experience, Brimarco combines proven knowledge with modern innovation, delivering custom trailers and custom movable facilities that are trusted to perform across Australia’s toughest conditions.
Genuine People
We believe in straight answers and strong relationships. Our team takes a hands-on, honest approach, always working closely with our customers to deliver solutions that suit their operation, not a standard specification sheet.
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